Coke-oven.



H. KOPPERS.

GOKE OVEN.

APPLIGATION FILED AUG.10. 1907.

Patented June 22, 1909.

3 SHEETS-SHEET 1.

Fig. 7

Q u Illllll H. KOPPERS.

COKE OVEN.

APPLICATION FILED AUG.10, 1907. patanted June 22P 1909 3 SHEETS-SHEET 2.

H. KOPPERS.

COKE OVEN.

APPLICATION FILED AUG.10, 1907.

Patented June 22, 1909.

3 SHEETS-SHEET 3.

HEINRICH KOPPERS, OF ESSEN-ON-THE-RUHR, GERMANY.

COE-OVEN.

Specification of Letters Patent.

Patented June 22, 1909.

Application'med August 1o, 1907. serial No. 387,969.

'To all whom 'it' may concern:

Be it known that I, HEINRICH KoPPERs, a citizen of Germany, residing at Essen-onthe-Ruhr, Germany, have invented new and useful Improvements .in Coke Ovens, of which the following is a specification.

This invention relates to coke ovens and similar devices of the class which directly use the hot gases generated in blast furnaces, etc. As draft reversing valves for these hot gases are very objectionable, my oven is so constructed that the direction of the air current only is changed, while the hot gases flow continuously into the combustion' chamber.

. In the accompanying drawings: Figure 1 is across section through an oven constructed according to my invention, on line 1 1,

`Fig. 4; Fig. 2` a longitudinal section on line 2-2,Fig. 4; Fig. 3 a horizontal section on line 3-3, Fig. 1; Fig. 4 a diagrammatic plan of my improved oven 5 Fig. 5 a cross section through a modification of the oven, and Fig. 6 a vertical section on line 6 6, Fig. 5.

My improved oven comprises a series of retorts c, carried by a suitable stone structure b,- supported on columns a. Retorts c, are flanked by a suitable number ofvertioal heating lues d, separated from each other by partitionse, the flue/s d, of one retort being connected to those of the adjoining retort by upper horizontal connecting ducts f, each palr offlues and their connectingr duct f,

forming jointly a U-shaped heatingr channel. Retorts c, are preferably arranged in pairs, the retorts of each pair being separated from each other by hollow blocks of masonry z, which may be filled with sand or othcrmaterial, if desired. Flues d, communicate at their bottom with transverse flues g, which are, by air channels h, and i, alternately connected to regenerators k, and l, respectively, which flank the rows of retorts c. Regenerators k, and l, are adapted to communicate with the latmosphere by means of dampers m, m', and with chimney o, by means of dampers 'a, n.

Gas is supplied to the heating flues d, from a common supply channel ,which extends throughout the entire len t of the oven intermediate retorts c. C annel p, is connected by branches p, p, to gas generators g, and 1', respectively. Channel p, communicates with branches s, extendln vat right angles thereto between each pair of adjoining retorts c, the branches being arranged slightly below transverse ducts These branches open through nozzles t, into ducts and are rendered readily accessible through openings u, adapted to be closed by plugs o, o, and arranged in vertical alinenient with nozzles t.

In o eration, dampers m', n, are opened, while dampers m, fa', are closed, so that the air necessary for combustion will enter regenerator 7c, through open damper m', to be heated, whence it will be conveyed through channels h, and g, to the foot of those vertical flues d, which are situated to the left of artitions e. The air will then rise in said ues and pass through transverse ducts `7, where it will be mixed with the hot gases produced in generators q, and mand passing through channel p, branches s, and nozzles t, into said ductsf. At nozzles t, the mixture of gas and air is ignited and will'burn downwardly in the ducts d, situated to the right of partitions e. The exhaust gases are conveyed through channels g, and t', to regenerator Z, to give off their heat. The gases finally leave regenerator l, through open damper n, and chimney o. After the el'apse of a certain time, say thirty minutes, dampers m', n., are closed, while darn ers m, n', are opened to obtain the desired raft reversal. The hot air coming from the previously heated regenerator Z, will now ascend in those flues d, in which combustion took place before the draft reversal, so that the hot gases entering through nozzles t, will be deflected to the opposite side, so that combustion is now effected in those flues which were formerly passed by the hot air.

Thel perfectly symmetrical `arrangement of the heating flues with regard to the retorts insures a uniform heating of the same, irrespective of the direction of the draft. As further, all means for reversing the draft lof the hot gases are dispensed with, an economic and reliable operation of the oven is obtained.

In the modification illustrated in Figs. 5 and 6, retorts c, closed at their bottoms as at c2, are adapted to be charged through suitable hoppers c', having lids c4. After the heated retorts c3, have been charged and lids o, have been laced upon hoppers c', the gases generated) will pass into receivers x. Intermediate adjoining retorts are arranged U-sha' ed heating iues, the vertical legs d,l

of eac flue being connected by a transverse duct f. Flues d, are connected at their upper ends through channels h, and` t', with regenerators 7c, and l, respectively. Regen- 4erators- 7c, and Z, arepreferably arranged at such an elevation that their upper section may' communicate directly with channels h,

. and i. The hot gases pass from supply pipe e p', through branches s, and nozzles t, to t transverse 4duct f', of the heating flues, while Vadditional gas nozzles t', also communicating with branches s, are rovided in the lower section of flues d. Int 's way the length of the `heating zone is considerably increased, the combustion lbe inning alreadygi the lower art of that ue d, which is' Isupplied with t e air, instead of beginning at nozzle `t. .Dampers w, control lues d, and are accessible through openings u, closable by plugs c, fv.` The` operation corresponds in all respects to that of the oven above described. It will be seen' that my improved oven reuires only a reversal of the air supply inv or er to obtain the necessary intermittent change of draft, Ywhile the gas supply remains unchanged, so that all objectionable means ffor reversing the gas supply are dispensed with.

I claim:

1. In a retort furnace, al series of retorts, U-shaped heating channels intermediate said retorts, each channel consisting of two vertical iues and a connecting transverse duct, means for alternately supplyin ot er air to the free end of .one or the ue of each heating channel, and means for permanently connecting the ,transverse dict toa single gassupply,whereby the gas i the draft reversal point of the heatlng channel. p

2. In a retort furnace, a series of retorts, U-Shap'edheating channels intermediate Said retorts, each channel consisting of two vertlcal lues and a connecting transverse duct,

lues and a connecting transverse duct,l

means for permanently connecting the ducts to 'a hot gas supply, branches connecting alternating flues with the Jiirst Aand second regenerator, respectively, and means for'con.-

necting said regenerators either with thev atmosphere or with the chimney.

Signed by me at New York city, New York this 7th day of Au vust 1907.

' HEINR CH. KOPPERS; Witnesses:

FRANK v. BRIESEN, f ARTHUR E. ZUMPE.

introduced at l 

